I unscrewed and removed the hoods on my Aquatica megadome so I could (with the proper ext. ring) use it wide open at 8mm.

I also used it at 15mm as a replacement for my Sigma 15mm FE.

I even added a 1.4TC (and extension ring) and used it with the tiny 100mm dome port to try a little "wide angle macro" (although I struggled a little searching for subjects).

